## Abstract Constitutive equations are derived for the nonlinear viscoelastic behavior of amorphous glassy polymers. The model is based on the theory of cooperative relaxation in a version of the trapping concept. Stressβstrain relations are applied to fit experimental data for polycarbonate in the
Random walk model for viscoelastic response of glassy polymers
β Scribed by John T. Bendler; George H. Weiss
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 399 KB
- Volume
- 168
- Category
- Article
- ISSN
- 0378-4371
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
## Abstract Constitutive equations are derived for the timeβdependent behavior of semicrystalline polymers at isothermal loading with small strains. A semicrystalline polymer at temperatures above the glassβtransition point for its amorphous phase is thought of as a network of macromolecules bridge
The motion of swimming micro-organisms that have a preferred direction of travel, such as single-celled algae moving upwards (gravitaxis) or towards a light source (phototaxis), is modelled as the continuous limit of a correlated and biased random walk as the time step tends to zero. This model lead
Following pulsed irradiation of disordered solids, optical absorption of trapped electrons decays in the far red and increases in the visible. The random-walk model of Scher and Control, quantitatively apphcable to electron mobility by timeof-flight, supports hopping to successively deeper traps. Ba